Tone-arm.



Z; ECKLEBABGER.

- 'TONE ARM.

APPLICATION FILED JUNE 16. I911.

Patented June 11, 1918.

2 SHEETS-SHEET 1.

- Z. ECKLEBARGER.

TONE ARM. APPLICATION FILED JUNE 1 5. 19]].

{Q 2 SHEETS SHEET 2.

awn/00mm Patent'fid June 11,1918.

fiENA ECKLEBARGER, OF GOSf-IEN, INDIANA.

Specification of Letters Patent.

Patented June 111, 19199..

Application filed June 16, 1917. Serial No. 175,205.

To all whom it may concern:

Be it known that I, ZENA ECKLEBARGER, a citizen of the United States, residing at Goshen, in the county of Elkhart and State of Indiana have'invented new and useful Improvements in Tone-Arms, of which the following is a specification.

My present invention pertains to repro' ducers for use in sound-reproducing machines and more particularly to the tone arm of reproducers and means for moving the same; and it consists in the peculiar and advantageous tone arm hereinafter described and definitely claimed.

In the accompanying drawings which are hereby made a part hereof:

Figure 1 is a side elevation of a tone arm embodying my present invention.

Fig. 2 is a detail vertical section of the. same.

Fig. 3 is a crosssection on line 33 of Figs. 1 and 2.

Fig. 4: is a detail view of the arm section 5.

Fig. 5 shows the arm and means for moving the same.

Fig. 6 is a section on line 6-6 of Fig. 5.

Similar numerals of reference designate corresponding parts in all of the views of the drawings.

The upright portion 1 of the tone arm may be of the ordinary construction such as illustrated or of any other construction compatible with my invention without involving departure from the scope of the'invention as claimed as may also the tone arm portion 2 that reaches laterally from the upper end portion 1, excepting that the forward end of the said portion 2 is provided with a socket 3 for the reception of a ball 4- on the rear end of the portion or section 5 that is interposed between the. portion 2 and the sound box 6.

At this point I would have it understood that the sound box 6 7967' so may be of the construction shown or of any other ap proved type though the specific sound box illustrated is Well adapted for use in conjunction with my improved tone arm.

In furtherance of my present invention the ball 4 is preferably secured by a thread ed collar 4' on ihc rear end of section 5 and I would have it understood that the said ball and its poniplomenl'ury socket 3 con stitule important features of the invention.

' connection and i Formed in the circumference of the ball l is a groove 7, Figs. 2 and 3, and disposed in said grooves are two ring secti ns 8, Fig. 3, having seats 9 at points'about midway their length. These seats 9 are provided for the reception of the pivot points of set screws 10 that bear in and are carried by the wall of the socket 3. By virture ofj'this construction the tone arm portions or sections 2 and 5 are simply and strongly connected together, and this in such manner that the reproducer portions 5 and 6 are allowed to freely move upwardly and downwardly incidental to the motion of the record (not shown).

I he connection between the section 5 and the sound box 6 plus the appurtenances of said mechanism also constitute important features of my p1 esent invention. The said appurtenances are clearly illu strated at the left of Fig. 2, and by reference to said figure it will be understood I that the depending portion of? the section 5 is shouldered and exteriorly threaded at 11. The sound box 6 is bored to s ngly receive the depending portion of secti n 5 and to enable the sound box 6 to abut against the shoulder 10, and said sound box is also chambered for the reception of a lock nut 12 which is turned on the threaded end of the section 5. A steel washer 13 is arranged against the inner end of the chamber in the sound box, and an annular wave spring washer ii is interposed between the lock nut 12 and said steel washer 13. This construction is calculated to take up lost motion and afford uniform friction While, the steel washer 13 is adapted to reduce the wear. It will also be noted that said construction as a 'whole renders it feasible to adapt the repro ducer to either the hill and dale type of record or the laterally-waving groove type of record.

To limit the movement of the sound box about the depending portion of the section 5,

, prises a segmental gear 18 fixed to the uphanger 2 1 that is fixed to the underside of a table 25. The shaft 21 also extends loosely through a slot 26 in a hanger 27, and is equipped near its outer end with a beveled gear 28. The said beveled gear 28 is intermeshed with a gear 29 on an upright vertically-movable shaft 30. This shaft 30 has studs 32, disposed in vertical slots in a revoluble member 31 j ournaled and secured in a bearing 3 1 in the table. A swinging handle 33 is pivoted in the member 31 and provided With a cam head at its lower end arranged to engage the upper end of the shaft 30. Thus when said handle is swung from the position shown in Fig. 5 to a horizontal position,the shaft 80 and the entire arm of the shaft 21 will be depressed while the inner arm of said shaft 21 and the gear 20 will be raised with the result that the tone arm and the sound box will be raised to carry the latter clear of the record. Then when the handle 33 is swung horizontally, the tone arm and the sound box will be swung over the record and table.

It will also be noted that by reversing the horizontal movement of the handle and then restoring the same to the upright position illustrated in Fig. 5 the sound box and its appurtenances may be replaced in the working position shown in 5.

The stop lugs on the section 5 serve by bringing up against the end of section 2 to prevent the reproducer from falling when the tone arm and reproducer are lifted oil the record.

That portion 4:1 of shaft 30 below the gear 27 is adapted by hearing on shaft 21 to keep the gears 2928 from meshing too hard.

Having described my invention, what I claim and desire to secure by Letters-Patent, is:

1. The combination of a tone arm having an upright portion, a gear on said upright portion, a shaft having a gear intermeshed With the first-named gear, a handle, and a connection intermediate the handle and the shaft for actuating the latterby the former.

2. The combination of a tone arm having a movable upright. portion, a segmental gear fixed tosaid portion, a gear disposed under and intermeshed with the. said segmental able and horizontally-swinging tone arm, a

vertically swinging and horizontally movable handle, and means intermediate the handle and the tone arm, constructed and arranged to move the tone arm vertically on vertical movement of the handle and to swing the tone arm horizontally on horizontal movement of the handle.

4. The combination of a vertically-movable and horizontally-swinging tone arm, a gear thereon, a rotatable and vertically-movable shaft, a gear thereon and disposed under and in engagement with the firstnamed gear, a vertically-movable shaft, gearing between the said shafts, a revoluble member receiving and adapted to permit of independent vertical movement of the vertical shaft, and a lever pivoted on the revoluble member and constructed and arranged when depressed to depress the vertical shaft.

In testimony whereof I have hereunto set my hand in presence of two subscribing wit messes.-

ZENA ECKLEBARGER. I

Witnesses:

L. Bonn WHIPPY, ANTHONY DJBAHL. 

